MXL Timing Belts
MXL (Miniature Extra Light) timing belts are the smallest standard trapezoidal profile belt, designed for precision, low-load drives where compact size and accurate positioning are critical. With a 0.080" (2.032mm) pitch, MXL belts are commonly found in small instruments, office equipment, encoders, medical devices, 3D printers, and miniature automation systems. Texas Belting stocks MXL timing belts from leading manufacturers for same-day shipping from Houston.
MXL belts use a trapezoidal tooth form and are typically constructed with neoprene (rubber) bodies, fiberglass tensile cords for dimensional stability, and nylon tooth facing for wear resistance. Urethane MXL belts with steel or Kevlar cords are also available for cleanroom, food-contact, or extended-life applications.
MXL Timing Belt Part Number Decoder
MXL timing belt part numbers encode the belt's pitch length, profile, and width. Understanding the numbering system helps you quickly identify the correct replacement belt from any manufacturer's catalog.
Standard Format: [Pitch Length]-MXL-[Width Code]
| Part Number | Pitch Length | Width | How to Read It |
|---|---|---|---|
| 20.0-MXL-012 | 2.00" | 0.12" (1/8") | 2.00" pitch circumference, MXL profile, 0.12" wide |
| 36.0-MXL-025 | 3.60" | 0.25" (1/4") | 3.60" pitch circumference, MXL profile, 1/4" wide |
| 54.4-MXL-019 | 5.44" | 0.19" (3/16") | 5.44" pitch circumference, MXL profile, 3/16" wide |
| 68.8-MXL-037 | 6.88" | 0.375" (3/8") | 6.88" pitch circumference, MXL profile, 3/8" wide |
The pitch length in MXL part numbers is the total length of the belt measured along the pitch line, expressed in tenths of an inch. The width code is expressed in hundredths of an inch (for example, 025 = 0.25" = 1/4"). Some manufacturers may use metric equivalents. Texas Belting can cross-reference MXL belt part numbers from Gates, Continental, Bando, and other brands. Call 888-203-2358 or send us your part number for fast identification.
MXL Timing Belt Width Guide
MXL timing belts are available in several standard widths. The correct width depends on the load, pulley width, and the original equipment specification. Wider belts carry more load but require wider pulleys and more space.
| Width (Inches) | Width (mm) | Width Code | Typical Applications |
|---|---|---|---|
| 0.10" (approx.) | 2.5mm | 010 | Ultra-light instruments, encoders |
| 1/8" (0.125") | 3.175mm | 012 | Small sensors, miniature drives |
| 3/16" (0.1875") | 4.76mm | 019 | Office equipment, small printers |
| 1/4" (0.25") | 6.35mm | 025 | 3D printers, lab equipment, light-duty automation |
| 3/8" (0.375") | 9.525mm | 037 | Larger MXL drives, higher-load miniature systems |
| 1/2" (0.50") | 12.7mm | 050 | Maximum MXL width, heaviest miniature loads |
If your application requires a width not listed here, or if you are unsure which width to specify, contact Texas Belting for assistance. Custom widths may be available depending on the manufacturer and order quantity.
MXL vs. Other Miniature and Small Timing Belt Pitches
MXL is the smallest trapezoidal pitch in the standard ANSI/RMA system. The table below compares MXL to other small timing belt profiles to help you evaluate alternatives when designing or replacing a miniature drive.
| Profile | Pitch | Tooth Form | Load Capacity | Best For |
|---|---|---|---|---|
| MXL | 0.080" (2.032mm) | Trapezoidal | Very light | Instruments, encoders, office equipment, 3D printers |
| XL | 0.200" (5.08mm) | Trapezoidal | Light to moderate | Small machinery, robotics, general industrial drives |
| T2.5 | 2.5mm (0.098") | Trapezoidal (metric T) | Very light | European precision drives, sensors |
| 3M (HTD) | 3mm (0.118") | Curvilinear (HTD) | Light | Small servo drives, 3D printers, CNC |
| GT2 (2mm) | 2mm (0.079") | Modified curvilinear (GT) | Very light | 3D printers, hobby CNC, precision positioning |
| T5 | 5mm (0.197") | Trapezoidal (metric T) | Light to moderate | European industrial drives, packaging equipment |
MXL belts offer the most compact tooth pitch among standard ANSI trapezoidal profiles. For applications requiring higher load capacity in a small form factor, consider stepping up to XL (0.200" pitch) or 3M HTD (3mm pitch). For 3D printer builds and hobby CNC projects, GT2 (2mm) belts are a popular alternative with a similar pitch but curvilinear tooth form. See the Timing Belt Tooth Profiles Explained guide for a full comparison of all available profiles.
MXL Timing Belt Materials
MXL timing belts are manufactured in two primary body materials. The right material depends on the operating environment, cleanliness requirements, and expected belt life.
Neoprene (Rubber) MXL Belts
Standard neoprene MXL belts use a fiberglass tensile cord for low stretch and excellent dimensional stability. The tooth face is covered with nylon fabric for reduced friction and wear resistance. Neoprene MXL belts are suitable for most general-purpose miniature drive applications operating within standard temperature and humidity ranges.
Urethane MXL Belts
Urethane (polyurethane) MXL belts are available with steel cord or Kevlar cord reinforcement. Urethane belts offer superior chemical resistance, lower particulate generation, and are suitable for cleanroom, food-contact, and medical device applications. Urethane MXL belts are also available in open-end (continuous roll) form for custom-cut lengths.
| Property | Neoprene (Rubber) | Urethane (Polyurethane) |
|---|---|---|
| Tensile Cord | Fiberglass | Steel or Kevlar |
| Tooth Facing | Nylon fabric | Integral (no facing) |
| Chemical Resistance | Moderate | Excellent |
| Particulate Generation | Moderate | Very low |
| FDA/Food Contact | Not typically | Available (FDA-compliant grades) |
| Open-End Available | No (closed loop only) | Yes |
| Cost | Lower | Higher |
For food-contact or cleanroom applications, see Food Grade Timing Belts and Urethane Timing Belts for additional options across all pitch sizes.
Common MXL Timing Belt Applications
MXL belts are used wherever a compact, precise, positive-drive belt is needed and loads are relatively light. The small tooth pitch allows fine positional control with minimal backlash.
| Application | Why MXL Works | Typical Width |
|---|---|---|
| Optical encoders and sensors | Minimal backlash, precise tooth engagement | 1/8" to 3/16" |
| Small inkjet and thermal printers | Compact pitch fits small print head carriages | 1/4" |
| 3D printers (older/smaller models) | Fine pitch for accurate X/Y positioning | 1/4" |
| Medical and lab instruments | Cleanroom-compatible urethane options, low vibration | 1/8" to 1/4" |
| Office equipment (scanners, copiers) | Quiet operation, long service life at low loads | 3/16" to 1/4" |
| Miniature robotics and actuators | Lightweight, compact, no-slip synchronous drive | 1/4" to 3/8" |
| Vending machines and dispensers | Reliable indexing for product delivery mechanisms | 1/4" |
| Tape drives and media handling | Precise speed control, zero slippage | 1/8" to 3/16" |
MXL belts are not recommended for heavy industrial loads or high-torque applications. For those requirements, consider L (3/8" pitch), H (1/2" pitch), or HTD timing belts.
MXL Timing Belt Brands We Carry
Texas Belting stocks and sources MXL timing belts from the following manufacturers. We can cross-reference part numbers between brands to find the correct belt for your application.
| Brand | MXL Product Lines | Notes |
|---|---|---|
| Gates | PowerGrip MXL | Industry standard neoprene MXL belts with fiberglass cord |
| Continental / ContiTech | Synchroforce, Synchrobelt MXL | Neoprene and specialty compound options |
| Bando | Bando MXL | High-quality Japanese manufacturing |
| Diesel Belting | Diesel MXL | Cost-effective replacement option for standard MXL drives |
| Megadyne | Megapower, Megalinear MXL | Urethane open-end and closed-loop MXL belts |
Not sure which brand to specify? Texas Belting's team can help you match the right MXL belt to your application. Request a quote or call 888-203-2358.
